Goes bad, as milk

• Becomes undrinkable
• Turns, perhaps
• Spoils
• Some whiskey drinks
• Gets down (on)
• Certain cocktails

The Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
Sours \Sours\, n. Source. See Source . [Obs.] --Chaucer.

Wikipedia Word definitions in Wikipedia
Sours is a commune in the Eure-et-Loir department in northern France .

Wiktionary Word definitions in Wiktionary
n. (plural of sour English) vb. (en-third-person singular of: sour )